A turquoise cabochon opens up this pendant like a window onto a pure, saturated blue - no greyness, no cloudiness, just fine veining that breaks up the otherwise even colour. The smooth, domed surface of the stone brings out the depth of the colour with every turn of the head, while the vintage-style setting, with its gently milled edge and soft, flowing outline, recalls jewellery-making from decades past. A turquoise of such an even, calm shade is easy to overlook among stones of murkier colour, and hard to match again once you've let it go.

This particular stone comes from the Sleeping Beauty mine in Arizona, known for turquoise with an unusually even, blue colour free of any green tint. Silver and good stones get more expensive year on year, so buying a pendant like this today is a sound decision price-wise. The setting is made of refined European sterling silver 925, free of nickel and other irritant additives, so it can be worn without worrying about skin irritation. A layer of rhodium protects the surface from tarnishing and scratches, keeping the shine bright for years to come. The silver is stamped with the French maker's mark, attesting to the metal's origin.

This pendant fits well with office elegance, worn under a plain white shirt or a jacket in muted grey or beige, where the blue of the turquoise stands out clearly against the calm background. A short chain sits the stone right at the neckline, close to the collar, so it works well with an open-necked shirt worn without a tie. The pendant weighs 2.8 grams, so it wears lightly throughout the day. It's the kind of jewellery that pairs a restrained outfit with the bold, clear colour of the stone.